Self-loading magazine pencil



" April 115 1924.

J. C. WAHL SELF LOADING MAGAZINE PENCIL Filed Dec. 4, 1917 2o pencil,

guiding tubes .l iPatented Apic 15,1924. arr-o sa ari f'JoHN 0. want, or crnoaeo, rumors, ASSiIGNOR TO THE WAHL COMPANY, or

W1ILMINGTON, DELAWARE, A. oomoaarron or DELAWARE.

SEL -LO DING MAGAZINE PENCIL.

Application filed December}, 1917. Serial No. 205,280.

To all whom it may concern." 4

Be it known that 1, JOHN C. YVAHL, a

' citizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and use ful Improvements in Self-Loading Magazine Pencils, of which the following is a specification. I

My invention is a mechanical pencil of,

the particular species in which a lead of small diameter is propelled .througha tip 'by'means of a screw-driven plunger; Pen.-

are described in the cilsof this general type r p I issued patent to Keeran, No. 1,130,7 11. 1a The object of myinvention is to provide a pencil of the above mentioned type, with a self loading tip mechanism, to the end that the manual loading of the tip with a ,new lead, which is necessary in the Keeran may be avoided and the tip reloaded *by certain manipulations of the plunger without the necessity for the user handling the lead,with his fingers.

' Another object of my invention is to pro-- azine for holding an extra quantity of lea s andto;

2e vide a mechanical pencil with a ma rovide mechanism for feeding a. newlead from said magazine into the pencil tip as the v same may; be required. it so The ,bove and other objects of my invention will the apparent to those skilled in the art from a perusal of the following specifica-' ticnand claims.

My invention may be best understood by 85 reference to the following figures, of

' Fig. 1 is a longitudinal section of my improved pencil Fig. 2 is a plunger-propelli-ng means;

Fig. 3 is a detail of the magazine and for the lead; detail of-the upper portionof Fig. 1 is a" Fig 1; 1 v 4.5 ig. 5-is an additional detail;

' Fig, dis a section along the line 6 6 of Fig. 1, and Fig. 7 is a section "along the line 7-7 of Fi .1. a imilar numerals of reference refer to like parts in all the figures. improved pencil consists of a casing 10, which is preferably j tapered end 11, mounted in which is a steel tip 12 having longitudinal ridges therein detail of the plunger: and" threaded piece of metal, having. a.

ing out ofthe tip 12 and also preventing ro-1 tation of the lead relative to the tip. Mounted vin the casing 11 and abutting the rear end of the tip 12 is the assemblage shown in Fig. 3. This consists of a tubal 1, prefer. ably formed from a piece of 'sheet metal,

which is spread out at'itsmiddle portion into a V-shaped section 15 (Fig. 7) and reconstricted at its upper end 16 into a tube. The V-shaped section is terminated by discs '17 and 18, which are held in their place by In 19 on the wings of the V 15, said lugs being adapted to be riveted in suitable holes in-the washers 17 and 18. The entire assemblageshown in Fig. 3 is located in the -interior of the casing 10 in. the position showndn Fig. 1, from which it will be apparent thatthe tube 14 forms a continuation of the whole in the tip 12; The V- with the casing 10, forms a magazine 21 for surplus leads, as shown in Fig. 7 The disc 18 is providedwith a slot 20, for the-purpose of-providing an aperture by which the magazine formed by the casing and the magazine 21 maybe reloaded.

In the interior of the casing 10 and adjacent to the disc 18 is fastened an assemblage which consists of the tube 22, provided with by a piece 28, through which is a hole serv-.

ing to guide the plunger 26. The crosshead 25 slides freely in the fork 27 The upper portion of the 29, upon which is screwed a suitable cap 30, by means ofwhich the piece 29, and consequently the fork 27 and plunger 25, may be turned.

The enlarged ends 23 and 24 of the tube 22 have slots 31 and 32 therein, and the tube 22 is surrounded by a casing 33, formed of flat metal and having the section shown in Fig. 5, from which it will be apparent shaped portion 15, taken in conjunction enlarged ends 23 and 24. The tube 22 is threaded on its interior and said threaded fork 27 is fastened to a a to permitfthe casing33, with the channel 'tion with the outside channel to guide the leads-through the slot means for reloading 3.4, to be slid over the assemblage ,of the tube 22, and the enlar 24; The channel 34 W111 thus, in combinacasing 10,make a 20, thus providing a the magazine-21 when desired.

. My improved pencil is assembled as follows: A-threaded piece 37 is soldered in the forward end of the casing 10 and into this piece the .tip 12 is screwed, thus making a tight joint between the casing 10 and the tip 12, which is provided with shoulders I blage shown inFig. 4

as shown in Fig. 1. The assemblage shown in Fig. 3 is next inserted, then the casing shownin Fig. 5 is inserted, the lug serving'to locate said casing with reference to the assemblage shown in Fig. 3. The ass'em the sleeve 33 is united to the casing by a y 1 drop of solder and also'the enlarged head 24 is soldered to the interior of the sleeve .33. The fact of the upper portion of the mechanism .bein united to the casing of course serves to hold the assemblage shown in Fig. 3 in its proper position. The assemblage shown in Fig. 2 is next inserted, the

, plunger 25 being screwed into 'the'interior .in the threaded interior of the'tubing 22. As in elled by means of the the pencil described in the cited patent to Keeran, the fork 27 may be partially withdrawn at any time until it is stopped by contact of the end 28 with the plunger 25. The amount that the fork 27 has been withdrawn will be a measure of the length of. the unused lead remaining in the tip 12.

The operation of my improved pencil is as follows. Assume a lead 13 to be in the tip 12 as shown in Fig. 1. The lead is prolunger 26 as said ead shall be worn away y use, the plunger 26 being of course advanced by means of turning the cap 30, which, as herebefore' explained, serves to turn the crosshead 25 of the tube 22.

I When the lead has been used and it is deso as to be above the disc sired to insert a new lead into the tip, the head 30 is turned so as to withdraw the plunger 26 from the interior of the magazine 21, that is, the plunger is withdrawn 18. As soon as the plunger is out ofthe way a fresh lead will fall into the groove 36 (Fig. 7), it being of course assumed that during the reloading process the pencil as a whole is held in an approximately horizontal position with the charged magazine 21 uppermost.

ed portions 23 and is next inserted and i made from the The plunger 26 is then advanced by means of the head 30 and will engage the lead which has just fallen into the groove 36 and propel said lead. into thetube 14. The lead just inserted in the tube '14 will be propelled by the plunger until it encounters the rear end of the'old lead which is in the tip 12 and will force this small length of old lead out of the tip and the new lead may be protruded ready for use.

In order to .reload the magazine 21 it is only necessary to unscrew the plunger 26 until it is .beyond the disc 18, when the head 30 and attached fork 27 as a whole may be pulled out of the casing 10 until. stopped by contact of the piece 28 on the crosshead 25. The leads are theninserted one by one into the channel 34, and the pencil held in a vertical position. The leads will thereupon fall into the magazine 21, being guided thereto by the channel 34. Sufficient leads may be inserted until the -magazine 21 and the channel 34 are filled.

The head 30 is then returned to its normal which the channel 34 was loaded and the crosshead 25 advanced to insert a new lead into the tip 12.

Many changes and departures-may be precise structure herein dedeparting from ,the spirit.

since I claim:

scribed without of my invention,

1. In a mechanical pencil, the combination V of a combined magazine and guiding tube, said magazine and tube being formed of a piece of sheet metal formed at-its lower end into anapproximately tubular section and at its upper end into an approximately V section, and a disc washer sliding over said tube and fastened to the end of said V section.

2. In a. mechanical pencil, a combined magazine and guiding tube, said magazine being formed of a single piece of flat metal having the ends thereof formed into an approximately tubular section and the middle portion thereof formed into an approximately V section, 'and discs secured to the ends of said V section.

3. In a mechanical pencihthecombination of a combined magazine and said magazine and tube being formed of a piece of metal formed at'its lower end into an approximately tubular section and at its upper end into an approximately V-section, and a disc washer slid over said tube and fastened to the end of said V-section, the disc portion thereof formed into an approxi-v guiding tube,

said magazineeeaaea mately V-section, and discs at the ends of said ll-section, one of said discs being provided with an opening whereby pencil leads may be placed in the magazine.

5. In a mechanical pencil, a combined magazine and guiding tube, said magazine being formed of a single piece of fiat metal having the ends thereof formed into an approximately tubular section and the middle portion thereof formed into an approximately V-section, and discs at the ends of said V-section, one of said discs being provided with an opening whereby pencil leads may be placed in the magazine and the other disc having an inclined portion for feeding the leads from the magazine to the guide tube.

6. A mechanical pencil comprising a casing, a tip secured to one end of the casing, a

guide tube leading to the tip, a magazlne carried by the guide tube for holding the pencil leads, an interiorly threaded tube engaging the end of the magazine, arms extending longitudinally of the threaded tube, a threaded cross head carried between the arms and engaging the threads of the tube,

.way therein forfeeding leads to the magazine.

7. A mechanical pencil comprising a cas- I ing a magazine supported in the casing for receiving a supply of lead, a guide tube communicating with the magazine for receiving a single lead therefrom, a tube received in the casing 011 one end of the magazine, means operated by said tube for feeding a lead through the guide tube,-a-n enlargement on each end of the tube provided with a slot therethrough, and a casing carried by the enlargements and surrounding the tube, said casing having its longitudinal edges inturned to be received in the slots of the enlargements, said inturned edges forming a guideway for introducing leads to the magazine, In Witness whereof I have hereunto subscribed my name.

JOHN v 0. Warm 

